The Stretch Cohesion is fairly heavy, weighing in at about 350g (women’s medium). It’s made from Ark stretch and Mountain Hardwear’s own Conduit DT fabric, which is fairly breathable, and as the name suggests, the stretchiness in the fabric makes it a great jacket for high-energy activities. The hood is enormous – big enough to accommodate even the bushiest hair or even a cycling helmet. For women with more average-sized heads, the hood will cinch down well, with a clever single-handed adjustment system on the back of the head, and there’s a small amount of stiffness in the peak. It comes with pit zips and mesh-lined handwarmer pockets for ventilation, Velcro-adjustable cuffs, and a tab to roll away the hood.